After dieting for the emergence of gastric discomfort should first clarify the cause, and then treatment, gastric discomfort is the most common cause of gastrointestinal dysfunction, gastric ulcer, gastritis and so on. 1. Gastrointestinal dysfunction: it is a group of gastrointestinal syndromes, manifested as bloating, stomach pain, constipation, abdominal distension, etc., which is closely related to spirit, diet, environment, etc. Excessive dieting can cause such symptoms. Excessive dieting can cause this symptom, it is recommended that under the guidance of a doctor to use the bowel regulating gastric tranquilizer, digestive enzymes and other drugs, and to eat regularly. 2. Gastric ulcer: the gastric mucosa can be damaged due to excessive secretion of gastric acid, typical symptoms are stomach pain, acid reflux, heartburn and other symptoms, should be taken under the guidance of a doctor to inhibit acid stomach drugs, such as omeprazole, rabeprazole and so on. 3. Gastritis: If you are suffering from gastritis, and the discomfort is induced by irregular diet, such as stomach pain, bloating, vomiting, indigestion, etc., you can do gastroscopy and breath test for further diagnosis and treatment, such as aluminum hydroxide and domperidone. It is recommended not to diet excessively, and to consult the doctor promptly for any discomfort such as bloating, stomach pain, etc., and take medication as prescribed by the doctor.